canister filters?

ohiorn67

Member
I have an eheim 2217 on my 90....works well and is quite easy to maintain. never had any kind of leak and seems to be built well....
 

sammiefish

Member
Originally Posted by ohiorn67
I have an eheim 2217 on my 90....works well and is quite easy to maintain. never had any kind of leak and seems to be built well....
Ive seen those... does that one have the siphon button...sweet... how much do they go for?
the Magnum 350 has to be full when you put the top on or you can have trouble getting it started... once you get the hang of it its easy, but I often thought that siphon button would be a nice feature...
one plus of the Magnum 350 is that it cost about $60
of course the ehiem is THE industry standard.
 

ohiorn67

Member
gosh, I am not sure about the syphon button, my husband got it started. We purchased it at the lfs (dumb dumb dumb) and paid 200.00, I but I know I have seen them much much much cheaper online. It does however have these great valve turn offs when you need to remove it from under the cabinet that prevent any mess or leaking at disconnect. That feature I think is fantastic.
 

sammiefish

Member
in order to get those shut-offs with the Magnum you have to get the magnum 350 pro... comes with a bunch of other gadgetry... hose brush, biowheel, shut-offs, other stuff.... pushes the price up to about $100, otherwise you have to get them seperately. I still need to put my valves in... Ive had this beast about 10 years and still drip all over the place when i clean that thing... what a loser I am!!!
 

reefnut

Active Member
What will it be used for?? Bio, Mechanical or chemical filtration or all three??
My opinion is they can be a great tool for mechanical and chemical filtration but I would not use one for bio-filtration. Be sure to keep it CLEAN...
 

sammiefish

Member
im sure this has been addressed before but here goes...
I use mine only for carbon... how often should I change out the carbon to avoid the spent carbon from becoming bio-media?
 

ohiorn67

Member
some run their carbon all the time, I have used carbon once for a couple of weeks and noticed some cyanobacteria creep up for the first time...carbon can leak phosphates which I think is what happen to me..but all systems are different. I have since removed it and problem solved.
 

reefnut

Active Member
Originally Posted by sammiefish
im sure this has been addressed before but here goes...
I use mine only for carbon... how often should I change out the carbon to avoid the spent carbon from becoming bio-media?
Change it out at least once a month.
A good quality carbon will not leach phosphates but trapped particles and junk from not changing it out regularly can!!
I personally run carbon for 1-week each month, using new carbon each time.
 

ohiorn67

Member
HI Reefnut, I ran mine for a couple of week and saw that cyano as a change in the tank...maybe I should have not run it so long. I used the carbon pads you put in the eheim so not sure what the deal was but for 22 bucks for 3 of them I think they were good ones. I do change my filter "cotton" on top every 2 weeks. That is all I do...how else do you "clean" your cannister? Just curious!
 

farmboy

Active Member
I thought carbon was supposed to REMOVE phosphates?? Or am I getting my filter media mixed up??
 
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